arch/arm/mach-at91/board-usb-a926x.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-usb-a926x.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation.
   6  *  Copyright (C) 2007 Calao-systems
   7  *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <linux/types.h>
  25 #include <linux/init.h>
  26 #include <linux/mm.h>
  27 #include <linux/module.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/spi/spi.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/gpio.h>
  32 #include <linux/input.h>
  33 #include <linux/spi/mmc_spi.h>
  34
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/at91_shdwc.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51
  52 static void __init ek_init_early(void)
  53 {
  54         /* Initialize processor: 12.00 MHz crystal */
  55         at91_initialize(12000000);
  56
  57         /* DBGU on ttyS0. (Rx & Tx only) */
  58         at91_register_uart(0, 0, 0);
  59
  60         /* set serial console to ttyS0 (ie, DBGU) */
  61         at91_set_serial_console(0);
  62 }
  63
  64 /*
  65  * USB Host port
  66  */
  67 static struct at91_usbh_data __initdata ek_usbh_data = {
  68         .ports          = 2,
  69 };
  70
  71 /*
  72  * USB Device port
  73  */
  74 static struct at91_udc_data __initdata ek_udc_data = {
  75         .vbus_pin       = AT91_PIN_PB11,
  76         .pullup_pin     = 0,            /* pull-up driven by UDC */
  77 };
  78
  79 static void __init ek_add_device_udc(void)
  80 {
  81         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
  82                 ek_udc_data.vbus_pin = AT91_PIN_PC5;
  83
  84         at91_add_device_udc(&ek_udc_data);
  85 }
  86
  87 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  88 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  89 static int at91_mmc_spi_init(struct device *dev,
  90         irqreturn_t (*detect_int)(int, void *), void *data)
  91 {
  92         /* Configure Interrupt pin as input, no pull-up */
  93         at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  94         return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  95                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  96                 "mmc-spi-detect", data);
  97 }
  98
  99 static void at91_mmc_spi_exit(struct device *dev, void *data)
 100 {
 101         free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
 102 }
 103
 104 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
 105         .init = at91_mmc_spi_init,
 106         .exit = at91_mmc_spi_exit,
 107         .detect_delay = 100, /* msecs */
 108 };
 109 #endif
 110
 111 /*
 112  * SPI devices.
 113  */
 114 static struct spi_board_info usb_a9263_spi_devices[] = {
 115 #if !defined(CONFIG_MMC_AT91)
 116         {       /* DataFlash chip */
 117                 .modalias       = "mtd_dataflash",
 118                 .chip_select    = 0,
 119                 .max_speed_hz   = 15 * 1000 * 1000,
 120                 .bus_num        = 0,
 121         }
 122 #endif
 123 };
 124
 125 static struct spi_board_info usb_a9g20_spi_devices[] = {
 126 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 127         {
 128                 .modalias = "mmc_spi",
 129                 .max_speed_hz = 20000000,       /* max spi clock (SCK) speed in HZ */
 130                 .bus_num = 1,
 131                 .chip_select = 0,
 132                 .platform_data = &at91_mmc_spi_pdata,
 133                 .mode = SPI_MODE_3,
 134         },
 135 #endif
 136 };
 137
 138 static void __init ek_add_device_spi(void)
 139 {
 140         if (machine_is_usb_a9263())
 141                 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
 142         else if (machine_is_usb_a9g20())
 143                 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
 144 }
 145
 146 /*
 147  * MACB Ethernet device
 148  */
 149 static struct at91_eth_data __initdata ek_macb_data = {
 150         .phy_irq_pin    = AT91_PIN_PE31,
 151         .is_rmii        = 1,
 152 };
 153
 154 static void __init ek_add_device_eth(void)
 155 {
 156         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 157                 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
 158
 159         at91_add_device_eth(&ek_macb_data);
 160 }
 161
 162 /*
 163  * NAND flash
 164  */
 165 static struct mtd_partition __initdata ek_nand_partition[] = {
 166         {
 167                 .name   = "barebox",
 168                 .offset = 0,
 169                 .size   = 3 * SZ_128K,
 170         }, {
 171                 .name   = "bareboxenv",
 172                 .offset = MTDPART_OFS_NXTBLK,
 173                 .size   = SZ_128K,
 174         }, {
 175                 .name   = "bareboxenv2",
 176                 .offset = MTDPART_OFS_NXTBLK,
 177                 .size   = SZ_128K,
 178         }, {
 179                 .name   = "kernel",
 180                 .offset = MTDPART_OFS_NXTBLK,
 181                 .size   = 4 * SZ_1M,
 182         }, {
 183                 .name   = "rootfs",
 184                 .offset = MTDPART_OFS_NXTBLK,
 185                 .size   = 120 * SZ_1M,
 186         }, {
 187                 .name   = "data",
 188                 .offset = MTDPART_OFS_NXTBLK,
 189                 .size   = MTDPART_SIZ_FULL,
 190         }
 191 };
 192
 193 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 194 {
 195         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 196         return ek_nand_partition;
 197 }
 198
 199 static struct atmel_nand_data __initdata ek_nand_data = {
 200         .ale            = 21,
 201         .cle            = 22,
 202 //      .det_pin        = ... not connected
 203         .rdy_pin        = AT91_PIN_PA22,
 204         .enable_pin     = AT91_PIN_PD15,
 205         .partition_info = nand_partitions,
 206 };
 207
 208 static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
 209         .ncs_read_setup         = 0,
 210         .nrd_setup              = 1,
 211         .ncs_write_setup        = 0,
 212         .nwe_setup              = 1,
 213
 214         .ncs_read_pulse         = 3,
 215         .nrd_pulse              = 3,
 216         .ncs_write_pulse        = 3,
 217         .nwe_pulse              = 3,
 218
 219         .read_cycle             = 5,
 220         .write_cycle            = 5,
 221
 222         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 223         .tdf_cycles             = 2,
 224 };
 225
 226 static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
 227         .ncs_read_setup         = 0,
 228         .nrd_setup              = 2,
 229         .ncs_write_setup        = 0,
 230         .nwe_setup              = 2,
 231
 232         .ncs_read_pulse         = 4,
 233         .nrd_pulse              = 4,
 234         .ncs_write_pulse        = 4,
 235         .nwe_pulse              = 4,
 236
 237         .read_cycle             = 7,
 238         .write_cycle            = 7,
 239
 240         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 241         .tdf_cycles             = 3,
 242 };
 243
 244 static void __init ek_add_device_nand(void)
 245 {
 246         if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
 247                 ek_nand_data.rdy_pin    = AT91_PIN_PC13;
 248                 ek_nand_data.enable_pin = AT91_PIN_PC14;
 249         }
 250
 251         /* configure chip-select 3 (NAND) */
 252         if (machine_is_usb_a9g20())
 253                 sam9_smc_configure(3, &usb_a9g20_nand_smc_config);
 254         else
 255                 sam9_smc_configure(3, &usb_a9260_nand_smc_config);
 256
 257         at91_add_device_nand(&ek_nand_data);
 258 }
 259
 260
 261 /*
 262  * GPIO Buttons
 263  */
 264 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 265 static struct gpio_keys_button ek_buttons[] = {
 266         {       /* USER PUSH BUTTON */
 267                 .code           = KEY_ENTER,
 268                 .gpio           = AT91_PIN_PB10,
 269                 .active_low     = 1,
 270                 .desc           = "user_pb",
 271                 .wakeup         = 1,
 272         }
 273 };
 274
 275 static struct gpio_keys_platform_data ek_button_data = {
 276         .buttons        = ek_buttons,
 277         .nbuttons       = ARRAY_SIZE(ek_buttons),
 278 };
 279
 280 static struct platform_device ek_button_device = {
 281         .name           = "gpio-keys",
 282         .id             = -1,
 283         .num_resources  = 0,
 284         .dev            = {
 285                 .platform_data  = &ek_button_data,
 286         }
 287 };
 288
 289 static void __init ek_add_device_buttons(void)
 290 {
 291         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 292         at91_set_deglitch(AT91_PIN_PB10, 1);
 293
 294         platform_device_register(&ek_button_device);
 295 }
 296 #else
 297 static void __init ek_add_device_buttons(void) {}
 298 #endif
 299
 300 /*
 301  * LEDs
 302  */
 303 static struct gpio_led ek_leds[] = {
 304         {       /* user_led (green) */
 305                 .name                   = "user_led",
 306                 .gpio                   = AT91_PIN_PB21,
 307                 .active_low             = 1,
 308                 .default_trigger        = "heartbeat",
 309         }
 310 };
 311
 312 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 313         {
 314                 I2C_BOARD_INFO("rv3029c2", 0x56),
 315         },
 316 };
 317
 318 static void __init ek_add_device_leds(void)
 319 {
 320         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 321                 ek_leds[0].active_low = 0;
 322
 323         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 324 }
 325
 326 static void __init ek_board_init(void)
 327 {
 328         /* Serial */
 329         at91_add_device_serial();
 330         /* USB Host */
 331         at91_add_device_usbh(&ek_usbh_data);
 332         /* USB Device */
 333         ek_add_device_udc();
 334         /* SPI */
 335         ek_add_device_spi();
 336         /* Ethernet */
 337         ek_add_device_eth();
 338         /* NAND */
 339         ek_add_device_nand();
 340         /* Push Buttons */
 341         ek_add_device_buttons();
 342         /* LEDs */
 343         ek_add_device_leds();
 344
 345         if (machine_is_usb_a9g20()) {
 346                 /* I2C */
 347                 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 348         } else {
 349                 /* I2C */
 350                 at91_add_device_i2c(NULL, 0);
 351                 /* shutdown controller, wakeup button (5 msec low) */
 352                 at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
 353                                 | AT91_SHDW_WKMODE0_LOW
 354                                 | AT91_SHDW_RTTWKEN);
 355         }
 356 }
 357
 358 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 359         /* Maintainer: calao-systems */
 360         .timer          = &at91sam926x_timer,
 361         .map_io         = at91_map_io,
 362         .init_early     = ek_init_early,
 363         .init_irq       = at91_init_irq_default,
 364         .init_machine   = ek_board_init,
 365 MACHINE_END
 366
 367 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 368         /* Maintainer: calao-systems */
 369         .timer          = &at91sam926x_timer,
 370         .map_io         = at91_map_io,
 371         .init_early     = ek_init_early,
 372         .init_irq       = at91_init_irq_default,
 373         .init_machine   = ek_board_init,
 374 MACHINE_END
 375
 376 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
 377         /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
 378         .timer          = &at91sam926x_timer,
 379         .map_io         = at91_map_io,
 380         .init_early     = ek_init_early,
 381         .init_irq       = at91_init_irq_default,
 382         .init_machine   = ek_board_init,
 383 MACHINE_END